Cap for writing instrument



FIG. 1 is a right side view of the cap for writing instrument showing mynew design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a perspective view thereof.

The ornamental design for a cap for writing instrument, as shown anddescribed.